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<0816-feeder-closed-cad.PNG>
<0816-feeder-machine-photo-controller.jpg>
<0816-feeder-open-cad.png>
<0816-feeder-open-cad-rear.PNG>
<anti-popout.png>
This is great. I printed one out but don't have the springs yet. Seems to work pretty well from what I can tell so far. A US source of parts would be handy.
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For me, sourcing the parts, including the springs, was a pretty daunting piece of this. And I found that I ended up buying an entire bulk pack of stuff for just a few items. Now that I've been through the process I can see it isn't so bad.My 11 year old son has offered to put together an easy bag of parts for those of you who are looking for an easy way out to source the exact parts needed at one stop :) I'll try and post up a tindie link in the coming days. Additionally, we have the spreadsheet with the amazon links and such for the different parts we bought that I think will be coming to Michaels instructions as well.Its definitely worth the exercise to print and assemble one of these to see how it works. The more mindshare thinking about this problem and learning what works and what doesnt, the better the solutions we can uncover.
On Fri, Dec 15, 2017 at 9:56 PM, Robert Waters <rbrt...@gmail.com> wrote:
This is great. I printed one out but don't have the springs yet. Seems to work pretty well from what I can tell so far. A US source of parts would be handy.
On Friday, December 15, 2017 at 9:10:50 PM UTC-5, Gregory Davill wrote:Amazing work!I've ordered a set of parts form aliexpress to make up a few to test.Very excited to have some of these feeders running!Great work with the documentation too!
On Saturday, December 16, 2017 at 9:11:20 AM UTC+10:30, Michael G. wrote:
Hi!
Just had success with my updated feeders on plastic tapes. It seems a small feature after cover tape peeling does the trick to prevent parts from jumping out. Will experiment further and test whether it works at least 99% reliable ;) Paper tapes don't have the problem of jumping parts with this feeder design.
I uploaded the currentmost version as SolidWorks, STL and STEP-files to my page: https://docs.mgrl.de/maschine:pickandplace:feeder:automaticfeeders
Most of the documentation was updated to correspond to the current version already, some parts will be updated soon.
Anthony built one feeder (older version) already and we made a BOM for the US which I will check again and add to the page soon for easier sourcing.
Going to start to build some more feeder of the latest version now... If anybody would like to start these feeder, too, don't hesitate to contact me if you're missing details.
-michael
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Attached a photo of a finished, but still open feeder with some paper tape loaded and a animation showing the pick-place of a paper tape I just took (sorry for having the pick place out of focus ;).
if somebody wants to start a feeder in europe, I offer some unassembled controller-pcb plus one feeder-pcb I already have here for evaluation. you only need headers in a minimal version to get it working.
if you are interested, send me your address via private message and I will send them via Deutsche Post to you.
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Am 16.12.2017 um 17:20 schrieb Bernd Walter:
> Looks nice.
> What width are they?
> Both the pneumatic Yamaha as well as the Siplace use ~32mm for 12/16mm
> and ~16mm for a 8mm lane, modern feeder designs are slimmer.
overall width of one feeder at 8mm tape → 13.5mm, 12mm tape → 16mm, 16 →
20mm
> Even after looking on your design page, I still don't understand the
> adjustable spring tensioner.
the spring next to the servo motor is just to keep the tape in place by
adding some friction. The lane height is adjusted at the position, where
the cover tape peels off. you can insert a small M2 screw to screw down
the lever arm a bit to lower the lane's height. not optimal but better
than nothing.
> It pushes the tape down?
no, the bottom of the tape is always the same. but the upper bound of
the lane will get lower.
> Almost all commercial design pushes the tape up against the pick opening
> frame to have a consistent pick height.
wanted to do that first, but I didn't get such small features below the
tape printed well. maybe in future releases it could be revised.
> What I don't like with your design is that has parts much higher than
> the pick location.
> This can be a real pain with stuffed pick heads, which I already have
> with the CL feeders.
> I can't locate the camera over the pick location without ramming my
> nozzles into the feeder.
jeah, thats annoying, you're right. for my machine it is possible to
reach the pick location by camera but one must take care not to drive
sidewards.
> As a side note:
> I've noticed your reel holder.
> The siplace feeders don't have a reel holder, so this would come handy
> for me.
> What type of rods to you use?
I used 10mm aluminium rods from Hornbach in one version and in another
version I used 8mm stell rods, nothing special...
> Btw:. If you are ever near Moers and like to see the different feeder
> types I have live plus...
seeing a working feeder in real life would have made the design probably
much better ;)
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The image above is a design I was working on, however the ratchet system on the bottom was a pain to get working. Therefore I was going to look at using a clutch bearing:The Yamaha CL feeders use clutch bearings for the tape system and it works well. The basic idea is that the the spring (red in image above) pulls the take up wheel and the amount of tension on the spring sets the cover take up tension. Then using clutch bearing and pinch roller like the CL feeders would be a great addition to your feeder.
Hi!
Just had success with my updated feeders on plastic tapes. It seems a small feature after cover tape peeling does the trick to prevent parts from jumping out. Will experiment further and test whether it works at least 99% reliable ;) Paper tapes don't have the problem of jumping parts with this feeder design.
I uploaded the currentmost version as SolidWorks, STL and STEP-files to my page: https://docs.mgrl.de/maschine:pickandplace:feeder:automaticfeeders
Most of the documentation was updated to correspond to the current version already, some parts will be updated soon.
Anthony built one feeder (older version) already and we made a BOM for the US which I will check again and add to the page soon for easier sourcing.
Going to start to build some more feeder of the latest version now... If anybody would like to start these feeder, too, don't hesitate to contact me if you're missing details.
-michael
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FYI I’ve been working on a connection board which would take the place of your native shield to remove the need for the feeder pcb and associated tedious/bulky wiring. It’s basically a 35cm ruler with 25 x 6 pin headers evenly spread along it’s length, connected to I2C IO expanders and PWM drivers. This way the servos can plug in directly without cutting and soldering the cables, and the switch and motor only need to be soldered on one end.
I’ll likely connected the I2C to the RPI I use for network cameras as it’s right next to it on my machine, and then I can operate the feeders via ethernet (my whole machine uses ethernet).
I’ll put the kicad files on github when I’m finished.
Ps. Your mechanical design for the feeders is genius!
Paul.
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My 11 year old son has offered to put together an easy bag of parts for those of you who are looking for an easy way out to source the exact parts needed at one stop :) I'll try and post up a tindie link in the coming days. Additionally, we have the spreadsheet with the amazon links and such for the different parts we bought that I think will be coming to Michaels instructions as well.
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<command head-mountable-id="ACT1501948780856" type="ACTUATOR_READ_COMMAND">
<text><![CDATA[M144 A0]]></text>
</command>
<command head-mountable-id="ACT1501948802499" type="ACTUATOR_READ_COMMAND">
<text><![CDATA[M144 A1]]></text>
</command>
<command head-mountable-id="ACT1501948802499" type="ACTUATOR_READ_REGEX">
<text><![CDATA[value:(?<Value>-?\d+\.{0,1}\d*)]]></text>
</command>
<command head-mountable-id="ACT1501948780856" type="ACTUATOR_READ_REGEX">
<text><![CDATA[value:(?<Value>-?\d+\.{0,1}\d*)]]></text>
</command>
Can someone tell me what is the size of the extrusion that the feeder fits unto. I cannot open the design in Solidworks as mine is very old.
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I believe 20x40 works
On Wed, Apr 18, 2018 at 8:40 AM, Marius Liebenberg <mdlca...@gmail.com> wrote:
Can someone tell me what is the size of the extrusion that the feeder fits unto. I cannot open the design in Solidworks as mine is very old.
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It has some functions to analyze the model and it is very intuitive to use...
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I’m in the process of building a few of these myself. I changed all the screws to be M3 as that’s what I’ve got in stock, and I use a thread tap to thread all the holes. I even run the tap through the microswitch so I don’t need any nuts.
Paul.
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